Sand muller



y 1966 A. R. TACCON E 3,248,760

SAND MULLER Filed May 28, 1963 FIG-1 FIG 3 INVENTOR. VERTICALLYRECIPROCAL SHAFT ARM/we 1e. Dcroue United States Patent 3,248,760 SANDMULLER Arthur R. Taccone, 4217 E. Lake Road, Erie, Pa. Filed May 28,1963, Ser. No. 283,932 1 Claim. (Cl. 22-89) This invention relates tosand mullers and, more particularly, to sand mullers for conditioningsand in a foundry.

Sand mullers made according to prior inventions utilized muller wheelswhich were cylindrical in shape.

It has been discovered that by utilizing sand muller wheels which areoval shaped, the mulling action of the sand will be considerablyimproved.

It is, accordingly, an object of the present invention to provide animproved sand muller.

Another object of the invention is to provide a sand muller which issimple in construction, economical to manufacture, and simple andeflicient to use.

With the above and other objetcs in view, the present invention consistsof the combination "and arrangement of parts here-in-afiter more fullydescribed, illustrated in the accompanying drawing and more particularlypointed out in the appended claim, it being understood that changes maybe made in the form, size, proportions, and minor details ofconstruction without departing from the spirit or sacrificing any of theadvantages of the invention.

-In the drawing:

FIG. 1 is a cross sectional view of a sand muller according to theinvention taken on line 11 of FIG. 2;

FIG. 2 is a cross sectional side view taken on line 22 of FIG. 1; and

FIG. 3 shows two diagrammatic views of the muller with the wheel-s intwo positions of ninety degree rotation from each other.

Now with more particular reference to the drawing, a muller box orcontainer 13 is shown having sides 14 with a mechanism 11 supportedthereon for operating a muller axle 12. The muller mechanism 11 shown issimilar to that shown in Patent No. 2,377,307. The mechanism rotates theaxle 1-2 around to cause the wheels to mull the sand.

3,248,760 Patented May 3, 1966 ice The Wheels 10 are oval shaped andhave a flat periphery that rotates and engages the sand as it swings theaxle 12 around the center of the container .13 sothat the wheels 10 moveover the sand in a circular path. Since the wheels 10 are oval shaped,they will roll over hu-gh lumps of sand that would be pushed straightahead by a round wheel. The major axes of the wheels 10 are about equalin height to the depth of the container 13 and the minor axes aresubstantially half the major axes.

The foregoing specification sets forth the invention in its preferredpractical forms but it is understood that the structure shown is capableof modification within a range of equivalents without departing from theinvention which is to be understood is broadly novel as is commensuratewith the appended claim.

The embodiments of the invention in which an exclusive property orprivilege is claimed are defined as follows:

A sand muller comprising 'a muller container to receive sand,

, and a muller axle having a wheel on each of its opposite ends,

the intermediate part of said axle being fixed to a mechanism forswinging said axle around a pivot point,

said wheels being non-circular and the length of the major axis of eachsaid wheel being substantially equal to the depth of said container,said wheels being mounted on said axle to roll with said noncircularshape in engagement with said sand,

the length of the minor axis of each said Wheel being substantially halfsaid major axis.

References Cited by the Examiner UNITED STATES PATENTS 2,377,307 6/1945Brown 241-124 FOREIGN PATENTS 377,136 6/1923 Germany. 455,200 2/ 1950Italy.

I. SPENCER OV-ERHOLSER, Primary Examiner. MARCUS U. LYONS, Examiner.

